If you have a date, and you want to increment it by 1 day, you can use the DATE_ADD(date, INTERVAL 1 DAY) function. You can also use the date interval add operation as "date + INTERVAL 1 DAY". The tutorial exercise below gives you some good examples:

SELECT DATE_ADD(DATE('1997-01-31'), INTERVAL 1 DAY)

FROM DUAL;

1997-02-01

SELECT DATE('1997-01-31') + INTERVAL 1 DAY FROM DUAL;

1997-02-01